iOS-简单两步搞定自定义View

2019-12-04  本文已影响0人  晴天ccc

目录

  • 前言
  • 【一】纯代码自定义View
    ---- 基本用法
    ---- 使用构造方法传入外部数据
  • 【二】XIB自定义View
    ---- 基本用法
    ---- 模拟简单弹框VIew使用案例

前言

相信大家对于自定义View并不陌生,很多业务上面都会遇到,今天做了个总结,三步骤搞定自定义VIew,分类纯代码和Xib布局的方式。

【一】纯代码自定义View

基本用法

MyCodeCustomView.h中:

#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

@interface MyCodeCustomView : UIView

// 显示View
- (void)showPopView;

// 隐藏View
- (void)dismissPopView;

// Block点击事件回调处理
@property (copy,nonatomic) void (^submitBtnClickBlock)(UIView * view, NSString * keyStr);

@end

NS_ASSUME_NONNULL_END

MyCodeCustomView.m中:

#import "MyCodeCustomView.h"

@interface MyCodeCustomView ()
@property (nonatomic, weak) UILabel *nameLab;
@property (nonatomic, weak) UIImageView *headImgVIew;
@property (nonatomic, weak) UIButton *submitBtn;
@end

@implementation MyCodeCustomView

#pragma mark - 原始初始化方法

// 1、首先调用init方法
- (instancetype)init{
    if (self = [super init]) {
        [self setUp];
    }
    return self;
}
  
// 2、然后调用initWithFrame方法
- (instancetype)initWithFrame:(CGRect)frame{
    if (self =[super initWithFrame:frame]) {
        [self setUp];
    }
    return self;
}

#pragma mark - UI布局

// 初始化UI控件
- (void)setUp{
 
    UILabel *nameLab = [[UILabel alloc] init];
    nameLab.backgroundColor = [UIColor yellowColor];
    nameLab.textAlignment = NSTextAlignmentCenter;
    [self addSubview:nameLab];
    _nameLab = nameLab;
    
    UIImageView *headImgVIew = [[UIImageView alloc] init];
    headImgVIew.backgroundColor = [UIColor redColor];
    [self addSubview:headImgVIew];
    _headImgVIew = headImgVIew;
    
    UIButton *submitBtn = [[UIButton alloc] init];
    submitBtn.backgroundColor = [UIColor blueColor];
    [submitBtn addTarget:self action:@selector(submitAction) forControlEvents:UIControlEventTouchUpInside];
    [self addSubview:submitBtn];
    _submitBtn = submitBtn;
 
}

// 设置UI控件的frame
- (void)layoutSubviews{
    [super layoutSubviews];
    // 1.获取当前控件的尺寸
    CGFloat width = self.frame.size.width;
    CGFloat height = self.frame.size.height;
    // 2.设置子控件的frame
    self.nameLab.frame = CGRectMake(0, 0, width, 50);
    self.headImgVIew.frame = CGRectMake(0, 50, 100, 100);
    self.submitBtn.frame = CGRectMake(0, 150, width, height-450);
}

// 点击事件处理
- (void)submitAction {
    // 根据自己业务处理TODO
    NSLog(@"hello world !");
    [self dismissPopView]; 
    // Block点击事件回调处理
    if (self.submitBtnClickBlock) {
        self.submitBtnClickBlock(self, @"hello world");
    }
}

#pragma mark - 视图显示/隐藏控制

// 显示View
- (void)showPopView{
    [[[UIApplication sharedApplication] windows].firstObject addSubview:self];
}

// 隐藏View
- (void)dismissPopView{
    [self removeFromSuperview];
}

@end

MainViewCtl.h中:

#import "MainViewCtl.h"
#import "MyCodeCustomView.h"

@interface MainViewCtl ()
@property (strong,nonatomic) MyCodeCustomView * codeCustomView;
@end

@implementation MainViewCtl

- (void)viewDidLoad {
    [super viewDidLoad];
    // 在合适的时候先显示View
    [self.codeCustomView showPopView];
    // 在合适的时候先隐藏View
    [self.codeCustomView dismissPopView];
    
}

#pragma mark - 懒加载
 
- (MyCodeCustomView *)codeCustomView{
    if (!_codeCustomView) {
        _codeCustomView =  [[MyCodeCustomView alloc] initWithFrame:CGRectMake(0, 0, 300, 500)];
        _codeCustomView.frame =  CGRectMake(0, 0, 300, 500);
        // View点击方法回调处理
        _codeCustomView.submitBtnClickBlock = ^(UIView * _Nonnull view, NSString * _Nonnull keyStr) {
            // TODO
        };
    }
    return _codeCustomView;
}
@end

使用构造方法传入外部数据

MyCodeCustomView.h中增加:

// 构造方法 
- (instancetype)initWithData:(NSDictionary *)dataDict;

// 外部数据
@property (nonatomic,strong) NSDictionary *dataDict;

MyCodeCustomView.m中增加:

#pragma mark - 自定义初始化方法

// 对象方法
- (instancetype)initWithData:(NSDictionary *)dataDict{
    if (self = [super init]) {
        // 注意:先创建后赋值
        [self setUp];
        self.dataDict = dataDict;
    }
    return self;
}

#pragma mark - 数据相关

// 数据Setter方法,外部传入数据就会调用该方法
- (void)setDataDict:(NSDictionary *)dataDict{
    _dataDict = dataDict;
    self.nameLab.text = dataDict[@"realName"];
}

MyCodeCustomView.h中:

 
@implementation MainViewCtl

- (void)viewDidLoad {
    [super viewDidLoad];
    // 在合适的时候先显示View
    [self.codeCustomView showPopView];
    // 在合适的时候先隐藏View
    [self.codeCustomView dismissPopView];
    // 在合适的时候调整数据
    self.codeCustomView.dataDict = @{@"realName":@"李四"}; 
}

#pragma mark - 懒加载
 
- (MyCodeCustomView *)codeCustomView{
    if (!_codeCustomView) {
        _codeCustomView =  [[MyCodeCustomView alloc] initWithData:@{@"realName":@"张三"}];
        _codeCustomView.frame =  CGRectMake(0, 0, 300, 500);
        // View点击方法回调处理
        _codeCustomView.submitBtnClickBlock = ^(UIView * _Nonnull view, NSString * _Nonnull keyStr) {
            // TODO
        };
    }
    return _codeCustomView;
}  
@end

【二】XIB自定义View

基本用法

用法一:

我们需要在自定义View中做操作,需要实例化对象,然后进行逻辑操作。

MyCustomView.h中:

@interface MyCustomView : UIView

// XIB初始化方法
+ (instancetype)initWithCustomView;

// 显示View
- (void)showPopView;

// 隐藏View
- (void)dismissPopView;

// Block点击事件回调处理
@property (copy,nonatomic) void (^submitBtnClickBlock)(UIView * view, NSString * keyStr);

@end

MyCustomView.m中:

#import "MyCustomView.h"

@interface MyCustomView ()
@property (weak, nonatomic) IBOutlet UIView * infoView;
@property (weak, nonatomic) IBOutlet UIButton *checkBtn;
@property (weak, nonatomic) IBOutlet UIButton *submitBtn;
@property (copy, nonatomic) NSString *keyStr;
@end

@implementation MyCustomView

#pragma mark - 初始化

// XIB初始化方法
+ (instancetype)initWithCustomView{
    return [[[NSBundle mainBundle] loadNibNamed:NSStringFromClass([self class]) owner:nil options:nil] lastObject];
}

// Xib初始化完毕第一个调用的方法
- (void)awakeFromNib{
    [super awakeFromNib];
    [self initBaseConfig];
}

// 在这里写初始化的一些功能和设置
- (void)initBaseConfig {
    
}

#pragma mark - 视图显示/隐藏控制

// 显示View
- (void)showPopView{ 
    [[[UIApplication sharedApplication] windows].firstObject addSubview:self];
}

// 隐藏View
- (void)dismissPopView{
    [self removeFromSuperview];
}

#pragma mark - 点击事件处理

- (IBAction)btnClickAction:(UIButton *)sender {
   
   if (sender == self.checkBtn) {
       
   }else if (sender == self.submitBtn) {
       // Block点击事件回调处理
       if (self.submitBtnClickBlock) {
           self.submitBtnClickBlock(self, @"hello world");
       }
   }
  
}
@end

在控制器MainViewCtl.m中:

#import "MainViewCtl.h"
#import "MyCustomView.h"

@interface MainViewCtl ()
@property (strong,nonatomic) MyCustomView * customView;
@end

@implementation MainViewCtl

- (void)viewDidLoad {
    [super viewDidLoad];
    // 在合适的时候先显示View
    [self.customView showPopView];
    // 在合适的时候先隐藏View
    [self.customView dismissPopView];
}

#pragma mark - 懒加载

- (MyCustomView *)customView{
    if (!_customView) {
        _customView = [MyCustomView initWithCustomView];
        _customView.frame =  CGRectMake(0, 0, 300, 500);
        // View点击方法回调处理
        _customView.submitBtnClickBlock = ^(UIView * _Nonnull view, NSString * _Nonnull keyStr) {
            // TODO
        };
    }
    return _customView;
}
@end

模拟简单弹框VIew使用案例

例如一个弹框功能,我们无需再控制器进行操作,逻辑全部在View中处理。
使用类方法进行初始化即可。

MyCustomView.h中:

 
@interface MyCustomView : UIView

// XIB初始化方法
+ (instancetype)initWithCustomView;

// 带参数的类构造方法
+ (void)initWithCustomViewWithKey:(NSString *)keyStr;

// 显示View
- (void)showPopView;

// 隐藏View
- (void)dismissPopView;

// Block点击事件回调处理
@property (copy,nonatomic) void (^submitBtnClickBlock)(UIView * view, NSString * keyStr);

@end

MyCustomView.m中:

#import "MyCustomView.h"

@interface MyCustomView ()
@property (weak, nonatomic) IBOutlet UIView * infoView;
@property (weak, nonatomic) IBOutlet UIButton *checkBtn;
@property (weak, nonatomic) IBOutlet UIButton *submitBtn;
@property (copy, nonatomic) NSString *keyStr;
@end

@implementation MyCustomView

#pragma mark - 初始化

// XIB初始化方法
+ (instancetype)initWithCustomView{
    return [[[NSBundle mainBundle] loadNibNamed:NSStringFromClass([self class]) owner:nil options:nil] lastObject];
}

// 带参数的构造方法
+ (void)initWithCustomViewWithKey:(NSString *)keyStr{
    MyCustomView *customView = [MyCustomView initWithCustomView];
    customView.keyStr = keyStr;
}

// Xib初始化完毕第一个调用的方法
- (void)awakeFromNib{
    [super awakeFromNib];
    [self initBaseConfig];
}

// 在这里写初始化的一些功能和设置
- (void)initBaseConfig {
    // 直接展示View
    self.frame = CGRectMake(0, 0, 300, 300);
    [self showPopView];
    if ([_keyStr isEqualToString:@"YES"]) {
        // TODO
    }
}

#pragma mark - 视图显示/隐藏控制

// 显示View
- (void)showPopView{ 
    [[[UIApplication sharedApplication] windows].firstObject addSubview:self];
}

// 隐藏View
- (void)dismissPopView{
    [self removeFromSuperview];
}

#pragma mark - 点击事件处理

- (IBAction)btnClickAction:(UIButton *)sender {
   // 只在CustomView里面完成逻辑处理,和外界不做交互
    [self dismissPopView];
   if (sender == self.checkBtn) {
       self.checkBtn.selected = !self.checkBtn.isSelected;
   }else if (sender == self.submitBtn) {
       [NSUserDefaults setValue:@"hello world" forKey:@"MYKEY"];
   }
}

@end

在控制器MainViewCtl.m中:

#import "MainViewCtl.h"
#import "MyCustomView.h"

@interface MainViewCtl ()
@end

@implementation MainViewCtl

- (void)viewDidLoad {
    [super viewDidLoad];
    // 仅做展示,逻辑操作在内部进行
    [MyCustomView initWithCustomViewWithKey:@"YES"];
}
@end
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